I do realize this is a repost, but I will go more into depth and walk you through this oh so easy task step by step.
First of all to get leg/helm enchants Buy the enchant from ah/vendor. (Notice the only WOTLK helm that works right now is the 30 sp 20 crit from krintor, for other helm enchants revert to the BC ones.
Now that we have the enchants we can shop the gear, grab a boe or white item doesn't matter, just be sure that the person doing this for you does NOT equip the boe item. After we have gotten the gear enchant it with the Wrath/Bc Chants. They will become soul bound but that doesn't matter at all.
After enchanting the item you will need to kill yourself and take res sickness. Make sure all items are out of your bags!!! Or you are in for a hefty repair bill. I like to go to Undercity Just because at the entrance there is a cliff in which you can kill yourself, take res sickness, and just mount and jump again and die in 1 try. After the items are broken log out. When you log back in the items wont have the enchant and you will be able to mail the items to your alt or trade them to a friend.
After your alt has attained the crappy broken weapon he must REPAIR first then log out and back in. You will then have the leet gears.
ALSO for 19/29/39 Fun I recommend Shamans weapon enchants or Rogue Poisons
Although for the rogue/shaman enchants you need to use white weapons...a level
80 windfury enchant increases AP by 1200~ Flametongue 200~ Sp with a great 200 damage per hit Earth Living 150~ Rogues poison enchants are great too and last longer so you wont have to reapply so much
And if you don't really like to re apply the shaman/rogue enchants get multiples made at a time and have the person doing it for you send them to your twink...the
timers aren't affected while in mail so it is possible for you to have many weapons stock piled in mailbox.
I hope this clear things up and again I realize this is a repost.